System Self Test; Initial Power On - Honeywell KFC 150 Pilot's Manual

OPERATING THE KAP 150 SYSTEM
Initial Power On
When initially powered (no modes
selected), the KAP 150 will display aircraft
attitude on the KG 258 and unslaved head-
ing on the KG 107. Align heading to the
magnetic compass by pushing and rotating
the knob on the lower left of the KG 107 and
update periodically to correct for preces-
sion. The trim light will be lit on the KC 191
to remind of the need to perform the system
self-test. (With optional KCS 55A Compass
System, a KI 525A PNI is installed in place
of the KG 107. The PNI will display slaved
heading.)
System Self-Test
I
The KAP 150 system incorporates a
The test checks all digital computing
capability, the disconnect capability of the
autopilot, the auto trim drive and monitor
systems, and the failure annunciator system.
CAUTION: If the trim legend flashes or
remains on at the end of the test it indicates
there is a failure in the trim system and the
autopilot will not engage. See a qualified
King Service Agency for repair.
system self-test function which is activated
by a test button on the KC 191 Mode
Control/Computer/Annunciator. The test
must be performed before the autopilot can
be engaged. The test determines, before
takeoff, that the system is operating normal-
ly. To perform a test - momentarily push
the test button:
1. All annunciator lights, the trim light and
autopilot light will illuminate.
2. The trim light will flash 4 times.
3. The annunciator legends will be blank,
an aural tone will beep (approx. 6
times) and the "AP light will flash
(approx. 12-13 times) and go off. (If
the AP light fails to flash you will be
unable to engage the autopilot.)
4. The KC 191 display will go blank.
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